Question on call to India-1000 min for 20$

Hi, Few Questions on India LD plan..1000 minutes for 20$. Can I use them at any time? and will they eat the minutes of current plan i.e 200 minutes or 300 minutes one? Also let me know if these 1000 minutes are to be utilized in one month or can carry forward?

The 1000 minutes are for 1 billing cycle, there is no carry over. They will refresh when a new billing cycle starts. If you call during the day, then it will also come out of your airtime minutes. If you call in the evening then your airtime minutes of your plan won't be used.